Boring apparatus.



C. CANTILLI.

BORING APPARATUS.

APPLIOATION FILED NOV. 19, 1909.

1,003,334, Pa en ed Sept. 12,1911.

Fig/t 16 54, F651. 4

UNITED sfrarns UQNSTANTIN GAIUTILLI, 0F BUCHAREST, ROUMANIA.

BORING APPARATUS.

ooaesa.

Specification of-Letters Patent.

Patented Sept. 12, 1911.

application filed November 19, 1909. Serial No. 528,922.

To all t m it may concern:

Be it 1 iown that I, GoNsrAN'rIN CAN'rILLI, a citizen of the Kingdom ofRoumania, residing at Bucharest, Roumania, have invented certain new anduseful Improvements in Boring Apparatus, of which the following is afull, clear, and exact description.

My invention. refers to an apparatus for effecting borings ofanydimensions and at any depth, whatever may be the nature of the ground.One of the principal features of the invention consists in thearrangement of the motor driving the tools as well as in the arrangementof the apparatus itself so that it accompanies the tool or tools intheir ascending or descending movements as the Work progresses.Advantage has also been taken of centrifugal force for increasing thearea worked on or rendering it larger than the boring tube itself, whileat the same time permitting the said tools to pass through the latter.

I shall now describe my invention with reference to the accompanyingdrawing showing one form. of construction of the present apparatus, inwhich Figure 1 is a vertical section. along the axis of the apparatus.Fig. 2 is a detail of one of the tools. Fig. 3 an elevation of the tools ft and a disk carried thereby. Fig. 4 is a View of the tool shown inFig. 2 loolo ing at right angles thereto. Fig. 5 is a view of the partsshown in Fig. 3 with the cutters mounted. in the disk. Fig. 6 is anelevation of the shaft and a disk or plate with a plurality of differentforms of tools. Fig. 7 is an elevation with a portion broken awayshowing the tubular casing. Fig. 8 is a horizontal section on the lineA-A of Fig. 1. Fig. 9 is a, plan of one of the tool car-- riers.

The apparatus consists of a metal tube a the upper part of whichterminates in an arch connected by a neck (Z with a ball 0 provided witha ring 6. The lower part of the tube a-is threaded at An electric motor9 is situated at the interior of the tube a and is held in position byscrews h; the current is supplied to the motor through a wire i passingthrough a screw plug 6 in the arch F). A plate a closes the tube at itslower portion just above the screw thread f and is held in position byscrews a An opening formed in the center-of the plate a per mits thepassage of the shaft 9 of the motor, which latter is completely incloscdin the tube a and thus well protected against the penetration of foreignbodies which might eventually interfere with its working. The tubularpart j is screwed to the tube a at f and is of cylindrical shapethroughout almost the whole of its length .but is slightly enlargedbell-shape at its lower end 3'". A door is formed in the walls of thetube j and turnson two or more hinges 70 The door is held closed at 7:70 by means of a lock 76% A hearing Z is arranged in a support Zsituated Within the tube j. The support Z is held in position by screwsor rivets Z The tool carrier or borer properly speaking is shownseparately in Figs. 3, 5, 6 and rind consists of a shaft m provided witha coupling sleeve m by means of which it can be fixed to the shaft 9 ofthe motor by tightening up screws m m. A plate or disk n shown in planview in Fig. 9 is provided with holes n n and slots 12 for fitting theactual borer and four cutters. The central opening 11, is for borers,openings 71. are for the cutters p (Figs. 2 and 4) and the slots 11. forthe cutters y shown in Fig.6. j is a short section of the well casingsurrounding the tubular part j, see Fig. 1. The tools 0 and. p arerigidly fitted to the plate 77. whoreas the two cutters 1 g are mountedso as to pivot on the pins which pass through the holes Q3 in thecutters g Q and also through the openings 9 of the plate a. This methodof mounting the cutter q q is for the purpose of enabling the latter towork on a larger surface than that of the apparatus and the boring tube,so to allow the lattor to permit theytools to be easily introduced intothe boring tube. Figs. 5 and 6 give the projection of the surfaces actedon by the tools. A spirally arranged member such as a wire or rod 1- isarranged aroundthe shaft m and serves as guide when mounting orunmounting the same and also serves to assure the raising up of thematerials removed by the tools.

The apparatus works in the following manner: The apparatus is suspended,by a cable preferably a metallic cable, by its ring 6. The cable passesover the pulley arran 'ed at the to 3 of the borin tower scaf' b b 3folding or the like and preferably driven by means of some suitablemotor force. Near at hand'is arranged the arrival of the current, theswitch board and other apparatus necessary for the use of electric curforces its cutters and borers into the ground,

retaining its vertical position. Then the current driving the motor isswitched on thus causing the borer to rotate. The earth or materialsbroken up by the borer and cutters are raised by meansof thespiral a rranged around the shaft of the borer. When the apparatus has descended acertain dis-- tance'the borer will be filledwith earth, the current isthen switched off and the appa ratus withdrawn; then by means of thedoor is the earth or other material contained in the apparatus isremoved. If the borer and the motorare hot, another apparatus will beplaced in the boring hole and two apparatus will thus be usedalternately. hen boring in a layer of very hard stone the cutters areremoved and only the plate is used which is fitted to the shaft insteadof the borer and is provided with diamonds; after having worked forexample for a depth of about 20, centimeters the inner cuttors are addedto the apparatus and again a depth of about 20 centimeters cut through,then the two other pivoting cutters are fitted to the apparatus andagain 20 centimeters cut through, all these cutters being provided withdiamonds. Inasmuch as it is not possible to bore into stone for anylength of time without stopping and as furthermore the layer removed bythe diamonds is not thick enough to reach to the spirally arrangedvertically disposed wire or the like, the borer with the cutters isremoved and the apparatus provided with an ordinary tubular borer suchas is used when boring by hand to remove the mud; but it should be ofthe same diameter-as the bore, because care will always be taken to havea certain amount of water in the boring hole so as to prevent the toorapid heat'ng ot. the borer as well as the explosions that might resultowing to the presence of gas; so that the apparatus will withdraw thebroken residues of stonetogether with the ivatcr. When a new column oftubes are introduced into the boring hole for well known reasons whenboring and the diameter of the boring hole is reduced another apparatusof the re quired dimensions will be employed.

Having thus described my invention, what I clann is:

In an apparatus for the purpose described, a tubular part havingbell-shaped lower end, a tube screwed into the upper end of the same andhaving a closed upper end with suspending means, a motor within saidtube, a plate separating the tube and tubular part, a motor shaftextended through said plate, a support within the tubular part having abearing for said motor shaft, a tool holder carried by said shaft and-aspirally arranged vertically disposed member within said tubular partabove its bell-shaped end and secured to said support within thetubular-part, said spirally arranged member serving as a guide inassembling the parts and as a means for raising the material removed bythe tools.

In testimony whereof I aflix my signature in presence of two witnesses.

GONSTANTIN CANTILLI. \Vitnesses A. Rosnnsrnm,

J. I'IAFFNER.

